$( document ).on( "ready",  function() 
  {
	 $( ".enlace_menu" ).each( function() 
	   {
		  //console.log( this );		
		  var href = $( this ).attr( "href" );
		  //console.log( href );
		  
		  if ( href != "undefined" && href != "" )
			{
			  $( this ).attr( "#" );
			  $( this ).on( "click", function( event ) 
			    {
				   event.preventDefault();
				   $( "#contenido" ).empty();
				   $( "#contenido" ).load( href );
			    } );
			}
		  
		  //console.log( this );
	   } );		
  } );